# File lib/merb-extjs-direct/mixins/remoting_provider.rb, line 137
        def handle_request(req)
            req = XRequest.new(req)

            begin
                # here's the Ext.direct.Transaction as a ruby Hash.
                # turn it into an offical ruby XRequest instance.
                # constantize the part-controller and send "action" to it.
                # NOTE:  Extlib has nothing to do with ExtJS -- just a coincidence.  Extlib is a Merb gem.
                return part(Extlib::Inflection.constantize(req.controller) => req.action, :xrequest => req)
            rescue XException => e
                # caught an XException...return an Ext.Direct-friendly XExceptionResponse
                return XExceptionResponse.new(req, e).to_json
            rescue StandardError => e
                # might be an invalid controller and/or action if we got here.
                # we can be more specific here and trap on NameError if we wish, intead of base StandardError
                return XExceptionResponse.new(req, e).to_json
            end
        end